User manual

Toolbox 32 User Manual 1.47d www.cse-semaphore.com/mykingfisher
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Setting Modbus Outputs To A Series I RTU
A Series I RTU will accept Modbus slave messages on port 2 only (CPU3 P2). These Modbus messages can
only be used to read and write to the RTU itself as a Series I RTU is unable to relay Modbus outputs to other
RTUs. This functionality was designed for local operator interface panels that are directly connected to
Series I RTUs.
In order to set Modbus outputs to a Series I outstation through a master RTU, the master RTU must be a
Series 2 RTU. The Series 2 master is configured to relay outputs by configuring the port as S1 Ctrl, Mbus,
S2 (please see the topic Configuration - Port List, Protocol). When relaying outputs to a Series I outstation
(an RTU that has a system ID of AC in the Network List), the Series 2 RTU automatically converts the output
to the Series I protocol and then relays the output to the outstation. It is necessary to do this as the output
usually goes to the radio port of the Series I RTU (CPU3 P1) which only communicates with the Series I
protocol. When relaying digital outputs, the Series 2 RTU sends the digital output in the MSB and the digital
mask in the LSB which allows individual channels in the one ID to be set ON or OFF.
When defining the Modbus output addresses for Series I, these are defined the same way as for Series 2
(please see the topic Driver - Modbus). It should be noted that a Series I RTU only has the equivalent of
registers 1 to 240 (IDs 1 to 240) and only uses 8 digital channels per register. These 8 digital channels are
stored in the MSB or the equivalent of Series 2 channels 9 to 16. Note: outputs to the lower 8 channels of a
Series I register (ID) are ignored by the Series 2 master.
The Modbus output address ranges for Analog and Digital Outputs are shown below.
Series I Analog
Outputs
Series I Digital Outputs
ID Address ID Channel Address
1 41,001 1 1-8 02,009 - 02,016
2 41,002 2 1-8 02,025 - 02,032
3 41,003 3 1-8 02,041 - 02,048
4 41,004 4 1-8 02,057 - 02,064
5 41,005 5 1-8 02,073 - 02,080
6 41,006 6 1-8 02,089 - 02,096
7 41,007 7 1-8 02,105 - 02,112
8 41,008 8 1-8 02,121 - 02,128
9 41,009 9 1-8 02,137 - 02,144
10 41,010 10 1-8 02,153 - 02,160
11 41,011 11 1-8 02,169 - 02,176
12 41,012 12 1-8 02,185 - 02,192
13 41,013 13 1-8 02,201 - 02,208
14 41,014 14 1-8 02,217 - 02,224
15 41,015 15 1-8 02,233 - 02,240
16 41,016 16 1-8 02,249 - 02,256
… … …
240 41,240 240 1-8 05,833 - 05,840
Sending Series I Pager Messages
Series I pager messages operate the same way as used in Series I systems. The pager message type and
target port defined in the Series I pager message are ignored. The settings defined in the Series 2 paging
RTU are used instead (this is the Target Site Address RTU that is configured in the Series I pager message
ID).